OpenVideo

An open-source, agent-friendly video editor. Upload your footage, trim and arrange the clips on a timeline, add text and music, and export to MP4.

A project is a plain-JSON edit decision list, not a proprietary project file: a person edits it on the timeline, and an AI agent can read and change the same document through the API.

Why

Most editors keep a project in a format built for their own app, not for you or an agent to read. Here the main track is an ordered list of clips, times are seconds, and positions are fractions of the frame. That makes it easy for an agent to assemble a cut, and easy for a person to adjust what the agent did.

Features

• Timeline editor: a main track of clips that play end to end, text on overlay tracks (colour, box and outline, for titles and captions alike), music on audio tracks. Trim, split, reorder and zoom, with filmstrips and waveforms.
• Live preview: one master clock plays the cut back in the browser as you edit.
• Media library: upload clips, stills and music, or import them from Google Drive, and use them in any project. Videos go straight to the managed media service, resumably and up to 30 GB, so a multi-gigabyte master plays, gets a transcript and exports without passing through the app. Each upload shows its progress, and one that drops picks up where it stopped.
• Formats: 16:9, 9:16 for Reels, TikTok and Shorts, 1:1, 4:5 and 4:3, or the shape of your own footage. Titles and logos keep their size and place when the shape changes, and clips either fit with bars or fill the frame.
• Crop: keep part of any clip, logo or picture-in-picture, free or held to 16:9, 9:16, 1:1, 4:5 or the video's own shape, with a scrubber to check the subject stays inside. The preview places a cropped clip exactly as the export does.
• Captions: switch them on for the whole video, pick one of twelve languages and one style. The words come from each clip's transcript, so captions follow every trim, split and reorder.
• Ask for a change: describe an edit in your own words and it is applied to the cut you have. The model calls a fixed set of checked operations, so the edit is always a valid document. One instruction, one undo.
• AI assist: Auto-cut watches several clips together and assembles the strongest sequence for what the video is for, captions included; Clean up trims one clip down to its good parts.
• Export to MP4 in draft, standard or high quality, on Clawnify's managed edit service.
• Share by link: one link per project plays an export to anyone you send it to, with no sign-in, and a Download button. The link stays on the export you shared until you move it to a newer one, so a draft never reaches viewers; turning it off ends it for everyone.
• Agent-ready: a REST API (/api/assets, /api/drive, /api/projects, /api/exports, /api/projects/{id}/share) and an agent.md, so an AI agent can assemble, edit and export videos without a human in the loop. Validation errors carry a JSON pointer to the offending node, so an agent's edit loop self-corrects.

How an edit works

A project is one JSON document. The main track is an ordered array, so splicing a clip in is an array insert and nothing else has to be recomputed:

{
  "version": 1,
  "output": { "width": 1280, "height": 720, "fps": 30 },
  "main": { "elements": [
    { "id": "intro", "type": "video", "src": "asset:3f9c2a1b8d4e6f70", "trimStart": 2 },
    { "id": "demo",  "type": "video", "src": "asset:9a1d4c7e2b5f8036", "duration": 12 }
  ]},
  "overlays": [{ "id": "titles", "elements": [
    { "id": "hook", "type": "text", "text": "Three features. One minute.", "fontSize": 72,
      "startTime": 0.5, "duration": 3, "x": 0.5, "y": 0.12, "align": "center" }
  ]}]
}

Overlays can also carry images and video (a logo in the corner, picture-in-picture). agent.md has the full format.

Quickstart

pnpm install
pnpm dev        # editor UI + API, with a local database & storage

Open the editor, hit New project, upload a clip from the Media panel, click it to put it on the timeline, and trim it. Export and the AI tools run on Clawnify's managed services, so they work once the app is deployed.

Deploy

This is a Clawnify app — deploy it to your org with the CLI:

npx clawnify deploy

Exporting runs on Clawnify's managed edit service, so deployed instances need no local video toolchain.

Project layout

src/
  client/app.tsx     # app shell and router
  client/edit.tsx    # projects list and the editor: media rail, player, inspector, timeline
  client/ui.tsx      # shared control recipes (buttons, dialog, empty state)
  client/styles.css  # design tokens: palette, type scale, elevation
  server/            # REST API (assets, projects, exports), EDL validation, the public share page
agent.md             # how an AI agent assembles, edits and exports videos

License

MIT.